Sure, we know eating too much sugar is bad for us, but did you know the sweetener is also bad for the planet? Sugarcane is often grown with chemical insecticides and fertilizers, but it's the way it's harvested that should have you concerned. Since 20 to 25 percent of the leafy part of the sugarcane plant is unnecessary and unproductive, when it comes time to harvest the plant, farmers burn the tops off. This leaves the cane stalk, which is where the sweet sugar is contained. It's bad for you and bad for the planet, so skip sugar.